Are pulsars related to quasars?
Yes and no. Neutron stars are very nearly dense enough to have become black holes, and a supermassive black hole is thought to lie at the center of, and be the energy source for, a quasar. It is also possible the structure, and rotation, of the magnetic field around a rotating black hole at the center of a quasar is similar to that around a pulsar — and would therefore be responsible for some of the effects observed for quasars.